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Probiotics and prebiotics in poultry nutrition
Under normal circumstances, there is a delicate balance of beneficial and pathogenic bacteria in the gastrointestinal tract (GIT). This is influenced by symbiotic and competitive interactions and relationships. The microbial communities will not only protect the GIT but also enhance productivity in the host. The use of probiotics and prebiotics are two approaches that have been examined and can potentially reduce enteric diseases in poultry and also enhance their productivity. These substances have been proposed to assist in the prevention of carcass contamination and improve the immune response in the chicken. Probiotics have been defined as 'a live microbial feed supplement which beneficially affects the host animal by improving its intestinal balance' (Fuller, 1989). The probiotic mode of action is by 'competitive exclusion', meaning there is competition for attachment sites in the GIT.
Introduction The differences in broiler chicken growth systems between conventional environmentally controlled housing and on pasture include rearing environments, feed components and what are considered acceptable dietary additives. Broiler chickens raised in conventional rearing systems are supplemented with antimicrobial agents or growth promoters for the purposes of production enhancement as well as improved health...
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Introduction Necrotic enteritis (NE) in broilers is a multi-factorial disease with severe economic implications (1). It is caused by type A strains of Clostridium perfringens that are specific to poultry with toxin types alpha and NetB (2, 3). Coccidia infections are the most common pre-requisite for NE to occur (4), however, dysbacteriosis associated with diet ingredients, changes in feed ration, immunosuppression,...
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1. Introduction Probiotics display numerous health benefits beyond providing basic nutritional advantages. Probiotic products consisting of beneficial microflora can help to establish and maintain the balance of the intestinal microflora in commercial broilers. However, selecting a probiotic microorganism that has beneficial effects in broiler chickens requires an extensive search for the optimum...
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Introduction Poultry production in the past century has transitioned from predominantly breeding layers to breeding a mixture of both layers and broilers, based on the evolution of consumer demand (1–3). Success in the optimization of different broiler lines is due to genetics as well as optimizing diets with more precise nutritional formulations (4, 5). Comparison of individual genetic lines has revealed differing...
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This article was originally published in British Poultry Science (2015), Vol. 56, No. 6, 723–732. INTRODUCTION Concerns regarding development of antibioticresistant microorganisms and social pressures have continued the trend to ban the use of antibiotics as growth promoters in poultry production (Castanon, 2007). This has also...
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Introduction The intestinal epithelium constitutes the largest and most important barrier against external environmental agents and has three critical functions: 1) To prevent the entry of harmful intraluminal microorganisms, antigens, and toxins; 2) To enable the selective translocation of dietary nutrients and electrolytes into circulation; and 3) To tolerate the beneficial microbiome [1–4]. Inappropriate...
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Introduction. Antibiotics are generally used in the poultry industry to prevent poultry pathogens and diseases as growth promoters. However, using of antibiotic in the diet caused the development drug-resistant bacteria (Edens, 2003), drug residues in the bird's body (Pelicano et al., 2004) and imbalance of normal microflora (Barton, 2000). As a result, there is an increasing...
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INTRODUCTION Avian coccidiosis is a global parasitic disease characterized with heavy health and economic impacts. Control of this disease is based essentially on chemoprevention using coccidiostats additives and more recently on immunization. Vaccine efficacy is variable and may in some circumstances be restricted, which led to the development of novel protocols that would improve vaccination effectiveness (Allen et...
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This study was conducted to assess the effects of different short-term water-soluble probiotic application methods (PAM), by a probiotic containing Enterococcus faecium, to reduce probiotic application cost with 2 types of diet (TOD) on performance, carcass characteristics, serum lipids, jejunal histomorphology, cecal microflora population and immune responses in broiler chickens. Five hundred sixty day-old male Ross 308 chicks were randomly distributed in a...
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1 Department of Poultry Science, University of Arkansas, Fayetteville, USA; 2 Vetanco Argentina S.A. Chile 33 (B1603CMA) Vicente López, Buenos Aires, Argentina; 3 Departamento de Medicina y Zootecnia de Aves, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México City, México; 4 Pacific Vet Group-USA, Inc., Creek...
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Introduction For several decades, the use of sub-therapeutic levels of antibiotics in animal feeds has been a common practice in many countries in order to improve growth performance and prevent from the adverse effects of pathogenic and non-pathogenic enteric microorganisms. However, there are increasing concerns for the public health about the consequences from the use of antibiotics in livestock [1]. The risk of...
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Bacillus Amyloliquefaciens CECT 5940 Allowed Maintaining of Performance and Accelerated Microbiota Maturation of Broilers Fed Alternative Ingredients
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At a time when sustainability and antibiotic reduction are major concerns for the international animal production sector, Probiotics have never been such a topical issue. Willing t o stimulate and promote probiotic research, the European Probiotic Association (EPA) is preparing to nominate the 2014 Jules Tournut Probiotics Prize Winner, who will be announced during EUROTIER in Hannover, on November 12 th , 2014. Members of the...
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David Harrington from Chr. Hansen speaks about his two presentations about the inclusion of the product GalliPro in broiler diets to enhance performance. ...
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On cherche des distributeurs dans plusieurs pays d’Afrique comme le Kenya, l’Ethiopie, la Tanzanie, le Congo, etc
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Sangita Jalukar Ph. D., Product Development & Research Coordinator at Vi-COR speaks about the use of prebiotics in poultry at the Latin American Poultry Congress 2013, El Salvador. ...
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Introduction The objective of this presentation is to discuss the role of dietary enzymes in the production of hydrolysis products that are important for animal health and food safety in the antibiotic-free poultry and swine nutrition. This presentation would also address any potential relationship between feed enzymes and yeast-derived products with the emphasis on the development of new enzyme supplements effective in...
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1. Introduction The poultry industry has become an important economic activity in many countries. In large-scale rearing facilities, where poultry are exposed to stressful conditions, problems related to diseases and deterioration of environmental conditions often occur and result in serious economic losses. Prevention and control of diseases have led during recent decades to a substantial increase in the use of veterinary medicines. However, the...
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Introduction Feed additives are popular for their diverse activity via different modes of action. Probiotics as feed additives are currently widely utilized in order to modify the microbial population in the digestive tract. According to FAO probiotics are live microorganisms which when administered in adequate amounts confer a health benefit on the host. They require several days to...
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*Poultry Science Department, University of Arkansas, Fayetteville 72701; †Poultry Production and Product Safety Research Unit, Agricultural Research Service, USDA, Fayetteville, Arkansas 72701; ‡Poultry Science Department, Texas A&M University, College Station 77843 Publication Date: 2007 Poultry Science 86:921–930 ABSTRACT ...
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